Tension-regulating device for thread-dressing machines.



PATENTED SEPT. 22,1903;

G. A. FREDENBURGH. TENSION REGULATING DEVICE FOR THREAD DRESSING MACHINES.

APPLICATION FILED JAN. 5'. 1903.

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No. 739,663. PATENTED SEPT. 22. 1903. G. A. FREDBNBURGH. TENSION REGULATING DEVICE FOR THREAD DRESSING MACHINES.

APPLICATION FILED JAN. 5, 1903.

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hl'o. 73),662 3. 4 V lPatented September 22, 1903 UNITED STATES PATENT OFFICE.

GEORGE A. FREDENBURGI-I, or PAWTUOKET, nnonn ISLAND.

TENSION-REGULATING DEVICE FOR THREAD-DRESSING MACHINES.

SPECIFICATION forming part of Letters Patent No. 739,653, dated September 22, 1903.

Application filed January 5, 1903.

' To whom it nmy concern.-

Be it known that I, GEGRGE A. FREDEN- .openingsff, (see Figs. 2 and 3,) divided equi- BURGH, a citizen of the United' States, residdistant apart throughout the length of said ing at the city of Pawtucket, in the county ofbar. A screw-threaded opening g extends 5 Providence and State of Rhode Island, have from the upper surface of the bar B and terinvented a certain new and useful Improveminates with a smaller concentric circular ment in Thread-Dressing Machines, of which opening g,which enters each of the first aforeihe following is a Specification. said openings f of the bar, as shown in Fig. 2. 6o

My invention relates to a thread-tension de- The openings ff'of the bar B are provided 10 vice adapted for {a thread-dressing machine to receive the grooved portion of the red A,

which is provided with brush-cylinders and as hereinhefore described. ironer-cylinders; and the object of my inven- C is a tube whichhas one end closed and its tion is to provide adjustable means for reguopposite end circumferential-1yscrew-threadlating the desired tension of the thread upon ed to engage and rigidly secure in the thread- 15 the brushand ironer cylinders of the said ed opening g of the bar B.

machine. his a.circular plug mounted and movable in The invention consists in the novel conthe tube O and projecting through the openstruction and combination of the severalparts, ing g of the bar B, and said plug hasitslower as hereinafter described, and specifically set extremity provided with opposite inclined 2c forth in the claims. sides adapted to enter in the grooves b b of In the accompanying drawings, Figure'l the rod Ain the manner shownin Figs. 2and4. represents a top plan view of my improved The upper portion of the plug it is reduced in thread-tension device as secured in'position diameter to form a shoulder, as at 'i, for the upon a portion of the machine-frame. Fig. 2 end of a coil-springj to bear against, and this 25 is a cross-sectional elevation view taken in spring is interposed between the shoulder of line XX of Fig. 1, illustrating the tension dethe plug it and the closed end of the tube 0, vice-as locked to the machine-frame. Fig. 3 and this construction of parts forms a lockis a similar sectional view showing the tening arrangement for holding the rod A in the So sion device as unlocked upon the machineposition required upon the bar B.-

0 frame. Fig. 4 is a side sectional elevation Referring to Fig. 5, which shows the manview taken in line Y Y of Fig. 1; and Fig. 5 nor of applying my improved thread-tension is a side elevation of the brush-cylinders and device to the frame of a thread-d ressing ma ironer-cylinders of a thread-dressing machine, chine, the thread 2.; incoming up from a twisttogether with their respective tension devices ing-head (not shown) passes from the rear of 5 in position for directing the thread to said cyla thread-guide d of a tension device, as deinders. scribed, and which guide d directs the thread Similar letters of reference indicate correupon the brush -cylinder Z, which lays the spending parts in all the views. fibers of the thread, and from this cylinderl o In the drawings, A represents acylindricalthe thread passes from the rear of the thread- 0 shaped rod provided with a series of trans-p guide (1 of another tension device like that verse groovesb b, which are divided equidisalready described, and which guide (1' directs tantly apart at one end of said rod, and these the thread upon the ironer-cylinder l, which grooves are formed in one side of the rod and polishes the thread, and from this cylinder? v terminate with shoulders c c of the same. the thread is directed from the rear of a 5 d is a flanged spool or thread-roller rotatathread-guide d of another tension device like bly mounted on a stud e, which is rigidly sethat already explained, and this latter guide cured at the opposite end of the said red A, d directs the thread to another twisting-head and this stud projects parallel with the transabove. I00 verse grooves b b in the same. The operation of my device is as follows:

50 13 represents a bar which is made a part of When more tension of the thread 7.. is rethe frame of the machine, and said bar exquired on the cylinders, the operator grasps tends longitudinally between the ends therethe spool end portion of the rod A and gives Serial No. l87,972. (No model.)

of and is provided with a series of circular the same a quarter-turn toward the right in the direction indicated by the arrow in Fig. 5, and which movement will have carried the rod around from its locked position, as shown in Fig. 2, to its unlocked position, as illustrated in Fig. 3, thereby forcing upward the bottom end of the spring-compressed plug h from its engagement in a groove 1) of said rod, and which plug will have been brought to bear upon the smooth circular surface of thesame. Theoperatorthenforcestherodinwardly on the bar B the distance required to give the proper tension of the thread, after which he will turn the rod back to its normal position, when the spring-controlled plug will engage in another groove of the rod, and this adjustment of the tension device carries the thread to the position as indicated by broken lines in Fig. 5. In order to prevent rotation of the plug h and keep its tooth-shaped end parallel with the grooves b b of the operating rod A, the said plug is provided with a pin h, that is rigidly secured in its side, and this pin projects through and is guided by a vertical slot h formed in the tube 0.

It will be understood that any number of these thread-tension devices may be mounted in the frame in accordance with the number of brush and ironer cylinders on the machine.

By my construction and arrangement of parts I provide a simple device that contains in itself all that is necessary to afford a quick means of adjusting the thread to the proper tension required upon the brush and ironer cylinders of a thread-dressing machine.

This invention is an improvement upon the thread-dressing machine shown and described in Letters Patent of the United States No. 702,786, issued to me June 17, 1902.

I claim as a novel and useful invention and desire to secure by Letters Patent 1. In a thread dressing machine having brush-cylinders and ironer-cylinders rotatably mounted on the machine-frame, the combination therewith, of a bar forming a part of the machine-frame, extending longitudinally thereof and provided with transverse circular openings, a circular rod provided with a series of transverse grooves on one side thereof and which grooved portion of said rod loosely enters one of the openings of said bar,

consisting of a circular rod carrying a threadroller at one end thereof and having its opposite end portion provided with transverse grooves formed in one side of the rod, said rod having its grooved portion mounted in the machine-frame, a tube rigidly secured to the machine-frame and extending vertically over said rod, a plug in said tube adapted to engage in a groove of said rod, a coil-spring interposed between said tube and said plug to keep the latter in contact with said rod, and so arranged that a rotative movement of the rod will unlock its connection with the spring-pressed plug and allow the rod to be moved to the fixed position required, substantially as shown and forthe purpose specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE A. FREDENBURGH. 

